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Repro of Electron issue 37417
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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="UTF-8"> | |
<!-- https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP --> | |
<meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'"> | |
<link href="./styles.css" rel="stylesheet"> | |
<title>Hello World!</title> | |
</head> | |
<body> | |
<h1>Repro of <a href="https://github.com/electron/electron/issues/37417">Electron issue 37417</a></h1> | |
We are using Node.js <span id="node-version"></span>, | |
Chromium <span id="chrome-version"></span>, | |
and Electron <span id="electron-version"></span>. | |
<p>Press button below to post message to BroadcastChannel</p> | |
<button id="btnPostMsg"> | |
Post message | |
</button> | |
<textarea id="txtArea" readonly style="width:100%;height:200px;"></textarea> | |
<!-- You can also require other files to run in this process --> | |
<script src="./renderer.js"></script> | |
</body> | |
</html> |
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// Modules to control application life and create native browser window | |
const {app, BrowserWindow} = require('electron') | |
const path = require('path') | |
function createWindow () { | |
// Create the browser window. | |
const mainWindow = new BrowserWindow({ | |
width: 400, | |
height: 600, | |
x: 400, | |
webPreferences: { | |
nodeIntegration: true, | |
contextIsolation: false, | |
preload: path.join(__dirname, 'preload.js') | |
} | |
}); | |
const secondWindow = new BrowserWindow({ | |
width: 400, | |
height: 600, | |
x: 800, | |
webPreferences: { | |
nodeIntegration: true, | |
contextIsolation: false, | |
preload: path.join(__dirname, 'preload.js') | |
} | |
}) | |
// and load the index.html of the app. | |
mainWindow.loadFile('index.html') | |
secondWindow.loadFile('index.html') | |
// Open the DevTools. | |
// mainWindow.webContents.openDevTools() | |
} | |
// This method will be called when Electron has finished | |
// initialization and is ready to create browser windows. | |
// Some APIs can only be used after this event occurs. | |
app.whenReady().then(() => { | |
createWindow() | |
app.on('activate', function () { | |
// On macOS it's common to re-create a window in the app when the | |
// dock icon is clicked and there are no other windows open. | |
if (BrowserWindow.getAllWindows().length === 0) createWindow() | |
}) | |
}) | |
// Quit when all windows are closed, except on macOS. There, it's common | |
// for applications and their menu bar to stay active until the user quits | |
// explicitly with Cmd + Q. | |
app.on('window-all-closed', function () { | |
if (process.platform !== 'darwin') app.quit() | |
}) | |
// In this file you can include the rest of your app's specific main process | |
// code. You can also put them in separate files and require them here. |
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{ | |
"name": "electron-fiddles", | |
"productName": "electron-fiddles", | |
"description": "My Electron application description", | |
"keywords": [], | |
"main": "./main.js", | |
"version": "1.0.0", | |
"author": "daw", | |
"scripts": { | |
"start": "electron ." | |
}, | |
"dependencies": {}, | |
"devDependencies": { | |
"electron": "23.1.1" | |
} | |
} |
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/** | |
* The preload script runs before. It has access to web APIs | |
* as well as Electron's renderer process modules and some | |
* polyfilled Node.js functions. | |
* | |
* https://www.electronjs.org/docs/latest/tutorial/sandbox | |
*/ | |
window.addEventListener('DOMContentLoaded', () => { | |
const replaceText = (selector, text) => { | |
const element = document.getElementById(selector) | |
if (element) element.innerText = text | |
} | |
for (const type of ['chrome', 'node', 'electron']) { | |
replaceText(`${type}-version`, process.versions[type]) | |
} | |
}) |
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/** | |
* This file is loaded via the <script> tag in the index.html file and will | |
* be executed in the renderer process for that window. No Node.js APIs are | |
* available in this process because `nodeIntegration` is turned off and | |
* `contextIsolation` is turned on. Use the contextBridge API in `preload.js` | |
* to expose Node.js functionality from the main process. | |
*/ | |
const bc = new BroadcastChannel('electronissue37417'); | |
const txtArea = document.getElementById('txtArea'); | |
const btnPostMsg = document.getElementById('btnPostMsg'); | |
btnPostMsg.onclick = postMessageToBroadcastChannel; | |
bc.onmessage = ev => txtArea.value += (ev.data.prop + "\n"); | |
function postMessageToBroadcastChannel() { | |
bc.postMessage({prop: 'Hello, timestamp ' + Date.now()}); | |
} | |
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/* styles.css */ | |
/* Add styles here to customize the appearance of your app */ |
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